1 /* 2 * Copyright (c) 2024 Nordic Semiconductor 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 /* Defines for Linux cooked mode capture (SLL) */ 8 9 #include <zephyr/kernel.h> 10 #include <zephyr/types.h> 11 12 /* Useful information about SLL header format can be found here 13 * https://www.tcpdump.org/linktypes/LINKTYPE_LINUX_SLL.html 14 */ 15 16 #define SLL_HDR_LEN 16 /* Total header length */ 17 #define SLL_ADDRLEN 8 /* Length of the address field */ 18 19 struct sll_header { 20 uint16_t sll_pkttype; /* Packet type */ 21 uint16_t sll_hatype; /* Link-layer address type */ 22 uint16_t sll_halen; /* Link-layer address length */ 23 uint8_t sll_addr[SLL_ADDRLEN]; /* Link-layer address */ 24 uint16_t sll_protocol; /* Protocol */ 25 }; 26 27 BUILD_ASSERT(sizeof(struct sll_header) == SLL_HDR_LEN); 28 29 #define SLL2_HDR_LEN 20 /* Total header length */ 30 31 struct sll2_header { 32 uint16_t sll2_protocol; /* Protocol */ 33 uint16_t sll2_reserved_mbz; /* Reserved - must be zero */ 34 uint32_t sll2_if_index; /* 1-based interface index */ 35 uint16_t sll2_hatype; /* Link-layer address type */ 36 uint8_t sll2_pkttype; /* Packet type */ 37 uint8_t sll2_halen; /* Link-layer address length */ 38 uint8_t sll2_addr[SLL_ADDRLEN]; /* Link-layer address */ 39 }; 40 41 BUILD_ASSERT(sizeof(struct sll2_header) == SLL2_HDR_LEN); 42 43 #define SLL_HOST 0 /* packet was sent to us by somebody else */ 44 #define SLL_BROADCAST 1 /* packet was broadcast by somebody else */ 45 #define SLL_MULTICAST 2 /* packet was multicast, but not broadcast, by somebody else */ 46 #define SLL_OTHERHOST 3 /* packet was sent by somebody else to somebody else */ 47 #define SLL_OUTGOING 4 /* packet was sent by us */ 48
